<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>===恒等</title>
		<script>
			var a="5";
			var b=5;
			alert(a==b);
			alert(a===b);
			var c="false";
			var k=false;
			alert(c==k);
			alert(c===k);
		</script>
	</head>
	<body>
	</body>
</html>